: from security applications to medical research

Andi Hektor (KBFI & GScan OÜ) In collaboration with M.Kiisk, M.Mägi, H.Plinte, et al

(Tartu U, UCLouvain, Exeter U, Taltech, CERN) Tartu, June 2021 Our story Cosmic ray tomography

2018 | MC modelling, 2020 | Working lab prototype 2016 | Startup company GoSwift: establishing the startup (TRL4). Preparations for Need to count people in cars. company GScan Minimal Viable Product. The idea: cosmic ray tomography

2019 | Preparation of the 2021 | Preparations for 2017 | First feasibility study in first patent application. production line. SilentBorder collaboration with Tartu U. Starting to build a lab project. Medical tomography prototype in collaboration in collaboration with KBFI. with Tartu U. 2 Cosmic ray tomography (aka tomography) | Absorption and/or scattering effect

https://arxiv.org/abs/1410.7192 3 Cosmic ray tomography | Based on the secondary particles from cosmic rays

• Primary cosmic rays, mainly protons • Secondary rays p + N(Nitrogen/Oxygen) → → (a lot of pions) • Pions decay to • Tertiary rays mu + N → mu + N + e+ + e-

• For tomography, we use both muons and electrons

4 (Multiple) scattering tomography Basic principles

5 Applications of CRT From geology to security

• Volcanoes, mineral exploration, tunnels • Pyramids, infrastructure – dams, bridges, buildings etc • Nuclear reactors, nuclear waste casks, decommissioning • Security and scanning • Medicine

• Companies on CRT: Decision Sciences, Ideon Tech, GScan

http://www.scanpyramids.org/ https://en.wikipedia.org/wiki/Muon_tomography 6 Tomography system by GScan Most accurate and compact CRT system

• Compact & very stable • Superb angular resolution (mrad) • Possibility to estimate the energy and particle type (muon/electron)

• Open up new applications: — Recognition of low-Z materials — Faster tomographic imaging — Security, custom & health apps

https://arxiv.org/abs/2102.12542 7 Tomography system by GScan Most accurate and compact CRT system

8 Tomography system by GScan Most accurate and compact CRT system

Multilayer fibre array

Readout electronics

Photo detector (SiPM)

9 Tomography system by GScan Most accurate and compact CRT system

Multilayer scintillator fibre array

We can classify the particle type and energy based on θ! 10 SilentBorder project by the Horizon programme Cosmic ray scanner for cars and containers

• Budget: 7.5 M€ (May 2021 - May 2025) • Tech partners: GScan (EE), Tartu U (EE), CAEN (IT), UCLouvain (BE), Shefeld U (UK), DLR (GE), SGS (CH) • Tests and users: Finnish, Estonian & Turkish customs

11 CosmoMed application to the EIC Pathfinder Cosmic ray scanner for health applications

• Budget: 2.9 M€ • Partners: GScan (EE), UCLouvain (BE), Exeter U (UK) • CRT is not just a new health tech, it can open up new exitng research prospects in medicine!

12 Takeaway messages From geology to security

• Cosmic ray tomography is an emerging field of tomography • Tech challenges: scintillator fibers, SiPMs, electronics • Theory challenges: special tomographic algorithms

• If you are interested in collaboration or to work on detector tech and tomography, please contact: [email protected]

http://www.scanpyramids.org/ 13 Thank you for your attention!